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A comment on 2+2=What? Parents rail against Common Core math. Parent comment
To solve your problem with the same technique as the article, you would have added 1 to 52, 73 - 53 = 20, then + 1 for the answer.
You would need to know ball park anyway to see if the calculator answer made sense.
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To solve your problem with the same technique as the article, you would have added 1 to 52, 73 - 53 = 20, then + 1 for the answer.
You would need to know ball park anyway to see if the calculator answer made sense.